Various brands of chlorine based bleaches biology essay

But if you — like the majority of coffee brewers — use paper filters, should you purchase bleached or unbleached ones? What can you do to avoid a papery taste in your coffee?

Various brands of chlorine based bleaches biology essay

Linda Crampton has an honors degree in biology. She has taught high school biology, chemistry, and other science subjects for many years. A symbolic representation of bleach in action Source A Versatile Household Product Bleach is a multipurpose product that is very useful in homes, hospitals, science laboratories, and industry.

It's a potent germ killer that can also whiten and brighten fabrics and remove stains. Some people even use it to create special effects in their art projects. There are several chemicals that can act as bleaches.

The most commonly used one is sodium hypochlorite, or NaOCl. The formula is also written as NaClO. Sodium hypochlorite dissolved in water is sometimes known as chlorine bleach. It destroys a wide range of bacteria, algae, fungi, and viruses.

Other hypochlorites can also act as bleaches, including calcium hypochlorite.

Various brands of chlorine based bleaches biology essay

This is sold as bleaching powder. Some chemicals that don't belong to the hypochlorite family are bleaches as well, such as hydrogen peroxide and sodium perborate.

This article is concerned with sodium hypochlorite in water, however, which is easily obtainable and widely used. It's a very helpful product, but it must be used with caution since it's potentially dangerous.

The fact that sunlight can act as a bleach has been known for a long time. Source The History of Bleaches The discovery that sunlight can bleach fabrics is a very ancient one. The ultraviolet radiation in sunlight is responsible for the colour fading.

Like chemical bleaches, UV light also kills germs if it's sufficiently intense. The discovery of chemical bleaches was based on the work of three scientists in the eighteenth and nineteenth centuries.

A Swedish scientist named Carl Wilhelm Scheele discovered chlorine. This is significant because sodium hypochlorite contains chlorine.

A French scientist named Claude Berthollet discovered that chlorine could bleach fabrics. He was also the first person to make a solution of sodium hypochlorite, which he called "Eau de Javel" or Javel water.

The name came from the part of Paris in which Berthollet worked. Antoine Germain Labarraque, another French scientist, discovered that hypochlorites could act as disinfectants. Laundry bleach brightens white fabrics. Source Sodium Hypochlorite Sodium hypochlorite is a white powder in its pure form.

The bleach that is bought in stores contains sodium hypochlorite dissolved in water. It's a clear solution with a slightly yellow colour.

Various brands of chlorine based bleaches biology essay

Household bleach that is intended to be used for disinfection generally contains about 5. Sodium hypochlorite is a very unstable substance and reacts chemically with the water in the bleach container.

A variety of reactions may occur, but the most common ones are described below. Production of Hypochlorous Acid The reaction between NaOCl and water produces produces HOCl, or hypochlorous acid, and sodium hydroxide, or caustic soda, as shown in the following chemical equation.

This ion decomposes into a very reactive form of oxygen and a chloride ion. Like hypochlorous acid, the oxygen can remove colour from items, but to a lesser extent.

Sodium hypochlorite is classified as an oxidizing agent. An oxidizing agent takes electrons from other chemicals when it reacts with them. Using its oxidizing ability, NaOCl or the HOCl that it produces breaks chemical bonds inside chromophores, which are the parts of molecules that give them colour.

This causes the chromophores to either change their bonding structure or to break up. The ability of the chromophores to absorb and reflect light is altered and they are unable to produce colour.Bleaches (chlorine and oxygen) whiten and brighten fabrics and help remove stubborn stains.

They convert soils into colorless, soluble particles that can be removed by . Natural bleaches can be found in various types of fruits juice and many more. This green "bleaches" are more friendly to environment and cheaper than commercial tranceformingnlp.com acid is one of bleaching agent that can be found in the citrus fruits such as lemon.

Various chemicals are presently being used to brighten specialty paper and ward off discoloration; they include optical brightening agents (OBA), chlorine-based bleaching agents, deinking agents.

Detergent Physical Characteristics. The concentration at which micelles begin to form is the critical micelle concentration (CMC). The CMC is the maximum monomer concentration and constitutes a measure of the free energy of micelle formation.

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Chlorine- and iodine-based compounds are the most significant microbicidal halogens used in the clinic and have been traditionally used for both antiseptic and disinfectant purposes.

Chlorine . - Chlorine-based bleaches are found in many household cleaners and play an important role in water treatment. However, they also pose a significant risk to the .

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